What is Agent Skill?

Skills are the atomic units of agent capability. Each skill encapsulates one business action: the inputs it needs, the systems it touches, the validations it performs, and the output it produces. A booking skill knows how to check availability, hold a slot, confirm with the guest, and update the calendar. A lead-qualification skill knows how to score inbound inquiries against criteria and route them to the right pipeline stage.

Skills are composable. An agent handling a complete customer journey chains multiple skills together — greeting, intent classification, product lookup, availability check, booking confirmation, payment processing, and follow-up scheduling. The agent's reasoning layer decides which skills to invoke and in what order based on the conversation context. Adding new skills to an agent expands its capabilities without retraining the underlying model.